3 button key chain size remote
The military radio equipment
Purple learn button on motor head
This 3 button key chain size remote is for NEW 2005 (and later) garage door openers by Liftmaster. The military radio equipment, also known as "Land Mobile Radio" (LMR) operates at 315MHz,with a purple learn button on motor head under light cover . Homeowners near these military bases may experience interference to their garage door openers that can cause the garage door opener to malfunction. In order to solve such interference problems as mentioned in the FCC Public Notice, homeowners can purchase a new liftmaster garage door operator OR a Conversion kit (includes a transmitter and a receiver) that operates on a different frequency that is not used by the LMR.
